SELFCAL Arguments:

          The arguments control the action.
        SELFCAL ?        Lists the self calibration parameters
        SELFCAL AMPLI    Perform an Amplitude only self calibration
        SELFCAL APPLY    Apply the solution
        SELFCAL CHECK    Check if Self-Cal makes sense
        SELFCAL FLAG []  Flag data according to self calibration correction
        SELFCAL PHASE    Perform a Phase only self calibration
        SELFCAL SAVE     Save the parameters in selfcal.last
        SELFCAL SHOW []  Show the computed corrections
        SELFCAL SUMMARY  Display the improvements in Noise & Dynamic range